For a young Lakota Sioux named Ota Kte, or Plenty Kill—later named Luther Standing Bear—the idea of attending the white man’s school first presented itself in the fall of 1879, when he and a friend noticed a crowd gathering around one of the agency buildings at Rosebud. Curious, the two boys approached the building and peered through a window. The room was mostly filled with Sioux, but there were also a few whites among them.